1 . Nervous, my mind went ________ (空白) and couldn’t say a single word. (根据汉语提示单词拼写)

2 . Her decision to cancel the concert is b________ to disappoint her fans. (根据首字母单词拼写)

3 . Surprisingly, only some bacteria are harmful-many be_________（有益的）. （根据汉语提示单词拼写）

4 . Cutting back on the number of cigarettes you smoke every day will be b________ to your health. (根据首字母单词拼写)

5 . Traveling to new places __________ (拓展) one’s mind and helps one gain a better understanding of the world.(根据汉语提示单词拼写)

6 . This alarm clock takes two medium-sized _________ (电池) . (根据汉语提示单词拼写)

7 . If your mind goes __________ (空白), try not to panic. (根据汉语提示单词拼写)

8 . It is said singing is of great b______ to human health. (根据首字母单词拼写)

9 . The river has two main _______ (支流) along its way to the sea. (根据汉语提示单词拼写)

10 . To our surprise, some treasures ___________ (属于) to China should be shown in British Museum. (根据汉语提示单词拼写)